While this is essentially correct, why weren't assets nearby to help? If the political situation didn't allow it, then why were our personnel told to stay in Benghazi instead of evacuating to Tripoli before 9/11 that year?....
If you want something that can do the job close in, you need an A-10 Warthog or an Apache Longbow helo, but both of those have a significantly slower airspeed than 1500 mph. I think the Apache can reach up to 200, but the range isn't that far.
Actually, Stevens WAS told to return to Tripoli, but he refused, saying that he had made a lot of progress with the locals and didn't want to appear weak by leaving.
Part of the blame is on Stevens himself.